Concrete filled steel tabular columns have gained immense importance in recent decades due to numerous structural benefits especially in developed countries like china, Japan, U.S.A, Britain. In this paper analytical equations are put to understand the mechanism of concrete filled tabular columns under axial loading. For this purpose a comparison between design codes Eurocode-4, and AISC-LRFD has been made in evaluating the axial compressive strength of concrete filled tabular columns. This study further presents a numerical investigation in to the behavior of concrete filled tabular columns using three dimensional nonlinear finite element software ABAQUS 6.13. The proposed finite element model is validated by comparing its results with those of the corresponding experimental specimens. The analytical results obtained are compared with the numerical results obtained from ABAQUS. Both square and circular concrete filled tabular columns having steel tubes of different geometries and infilled with different grades of concrete chosen from the literature are analyzed and the predicted axial strength obtained from different codes and by finite element analysis are compared. In this study 10rectangular specimens and 4 circular are analyzed.